Answer :
The correct answer is b. a hand pushing an object.
What are non-contact forces?
Non-contact forces act without physically touching an object.
- Gravity is a non-contact force that attracts objects to the center of the Earth. An apple falling off a tree is an example of it, or the moon orbiting the Earth.
- Magnetic fields are also a non-contact force. It is the one that acts when a paper clip slides towards a magnet.
What is a contact force?
A contact force is the one that acts when objects touch. A clear example is a hand pushing an object.
Learn more about forces here:
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